Simultaneous Nadir Overpasses (SNOs) between FY3D and LANDSAT-8
TLE Epoch: 2019 10 7.  Predictions up to the next  14.0 days:

     Date     Time(FY3D) FY3D Lat/Lon Date Time(LANDSAT-8) LANDSAT-8 Lat/Lon    Distance(km)  Time Diff(sec)
 10/08/2019   05:37:53   (  70.39,  92.42) 10/08/2019   05:38:20  (  70.41,  92.39)    2.91                27
 10/08/2019   06:28:35   ( -70.32,-100.15) 10/08/2019   06:27:50  ( -70.30,-100.15)    2.75                45
 10/10/2019   21:54:19   (  70.43,-151.76) 10/10/2019   21:54:48  (  70.43,-151.70)    2.26                29
 10/10/2019   22:45:00   ( -70.31,  15.76) 10/10/2019   22:44:18  ( -70.32,  15.77)    1.84                42
 10/13/2019   14:10:45   (  70.43, -35.86) 10/13/2019   14:11:18  (  70.40, -35.87)    3.12                33
 10/13/2019   15:01:26   ( -70.30, 131.66) 10/13/2019   15:00:48  ( -70.29, 131.61)    2.18                38
 10/16/2019   06:27:11   (  70.42,  80.04) 10/16/2019   06:27:47  (  70.42,  80.03)    0.90                36
 10/16/2019   07:17:52   ( -70.29,-112.43) 10/16/2019   07:17:17  ( -70.31,-112.49)    3.20                35
 10/18/2019   22:43:37   (  70.42,-164.07) 10/18/2019   22:44:16  (  70.43,-164.07)    0.70                39
 10/18/2019   23:34:19   ( -70.33,   3.39) 10/18/2019   23:33:46  ( -70.32,   3.41)    1.34                33